Smarter egg packaging: tackling breakage, waste and risk with flexible chips

Eggs are among the most transported foods in the world, but they are also one of the most fragile. Senior Director, Processor Development, Emre Ozer, and ASIC Design Engineer, Alireza Raisiardali, have developed a new smart solution that can reduce food waste, improve traceability and provide better quality assurance

If you crack an egg on the way home from the shops, it’s annoying, but it’s not a major issue. But when breakages during storage or transport go unnoticed at scale, the consequences for food safety, operations, and the environment can be serious.

Today, most breakages are spotted manually or only detected when a customer opens the carton. A new generation of smart packaging promises a better approach: using flexible, ultra-thin electronics embedded into the egg box itself to automatically detect broken eggs and alert supply chain systems in real time.

The perils of egg breakage

When multiple eggs crack and leak during storage or transport, the risks multiply quickly.

• Food safety and hygiene hazards
  Raw eggs can carry Salmonella and other pathogens. When egg white or yolk spills inside packaging, it creates an ideal breeding ground for bacteria. Contamination can spread to intact eggs, outer packaging, pallets, vehicles, or even the wider warehouse environment. Any clean-up requires strict biohazard procedures to protect workers and equipment.
• Environmental risks
  If large volumes of raw egg seep out, they can enter drainage systems, causing pollution and persistent odours. Poor disposal can attract pests such as rodents, flies and insects, compounding the hygiene challenge.
• Financial and operational impact
  A contaminated shipment may have to be written off entirely, even if only some eggs broke. Costs rise through unplanned cleaning, disinfection, downtime and waste disposal. Transport schedules can slip while vehicles are taken out of service. There are also reputational risks if the issue reaches customers or supply partners.
• Regulatory exposure
  In many regions, mishandling food waste at scale – especially hazardous organic waste – can fall foul of food safety and environmental regulations, triggering further penalties.

With razor-thin margins and rising regulatory pressure, producers and distributors need a way to detect breakages early and prevent small problems from becoming costly.

Making egg cartons smart

The proposed solution integrates flexible, electronic sensors into the egg box to automatically detect when an egg breaks and whether liquid has leaked.

Each egg cell contains two types of low-cost sensor:

• A resistive sensor at the bottom. If egg white or yolk leaks, it changes the resistance of the metal traces within the carton, signalling a break.
• A capacitive sensor at the top. When the shell cracks, the electrical signature near the sensor changes.

Metal traces inside the carton connect all sensors to a central FlexIC – a flexible integrated circuit with an RFID interface and a breakage detection unit. The FlexIC is powered wirelessly by an RFID reader, though a small, embedded battery could be added.

When powered, the breakage detection unit measures voltage or capacitance values from each sensor and compares them with reference values stored in on-board non-volatile memory. If a change exceeds a threshold, it flags the egg as broken. All cells are checked in parallel, so the scan takes milliseconds.

The status of each egg – “good” or “broken” – is then transmitted to an RFID reader. This allows fast, contactless inspection anywhere in the supply chain.

Beyond detection: predicting contamination risk

Because each scan is timestamped, the system can store the last moment where all eggs were confirmed intact. If breakage is detected later, the time elapsed can help estimate whether the entire box is likely contaminated. This enables smarter decisions about whether to quarantine, clean, reuse or discard the batch.

Providing tangible value

Embedding intelligence into packaging unlocks benefits from farm to shelf:

• earlier detection reduces waste and food loss
• automated inspection improves traceability and compliance
• fewer clean-ups and rejected loads reduce operating costs
• safer working environments and improved hygiene
• enhanced consumer trust through better quality assurance

As electronics become cheaper and more scalable, smart egg cartons signal a broader shift in the food supply chain: using flexible electronics and item-level sensing to improve safety, sustainability and cost efficiency.

Eggs may be fragile, but with the right technology, the supply chain around them doesn’t have to be.

Read the technical descriptor here (PDF)